Sometimes a female or a male needs some space to get away from their partner tending the eggs as they might get overprotective that they will kill their own partner. The bigger the tank is, more better for a breeding pair.
Yes, but I have a 55 and that will have to do for the time being. If I get a larger tank it won't be for them to breed in, it would be for the fish I have to upgrade in. The current 55 would be for them to breed in.
-Andrew